Armor up with Poly Savi 8220 UC, Stereo Standard to keep conversations private. The ultra-secure DECT bluetooth wireless headset is the perfect choice for financial, medical, government and contact centers or anywhere sensitive conversations happen. Relax knowing calls are protected—it's designed to meet the highest-level DECT security Step C, with military grade 256-bit AES encryption for maximum security. Combined with Poly Acoustic Fence technology and Microsoft Teams Open Office spec, conversations always stay clear, private and protected. And with up to 3x better density than other DECT headsets, interference isn't a thing - Up to 3x more density than other DECT headsets - Noise-canceling microphone with Poly Acoustic Fence technology - Up to 50 m/164 ft line-of-sight range - Ultra-comfortable headband - Dynamic Mute Alert senses and tells you when talking while muted - Talk time: up to 19 hours (ANC off) – up to 16 hours (ANC On) - Charge time: 2 hours for a full charge IN THE BOX:✅ Poly Savi 8220 UC, Stereo Standard Bluetooth Headset ✅ Carry case ✅ BT700 USB adapter ✅ Charge Stand ✅ Charging cable and charging base ✅ Global-Teck Microfiber Cloth ****Recommended for Professionals using desk phone and PC communications, VoIP softphones, Smartphone via Bluetooth and tablets. The Poly Savi 8220 UC, Stereo Standard is designed to work with a wide range of platforms and voice applications including: RingCentral, Teams, Fuze, 8x8, Zoom, Google Hangouts, GoToMeeting, Vonage, Unify, BlueJeans, Amazon Chime, etc